1289248199 has 2 divisors, whose sum is σ = 1289248200. Its totient is φ = 1289248198.

The previous prime is 1289248151. The next prime is 1289248201. The reversal of 1289248199 is 9918429821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1289248199 is a prime.

It is a Sophie Germain prime.

Together with 1289248201, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1289248199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1289248799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644624099 + 644624100.

It is an arithmetic number, because the mean of its divisors is an integer number (644624100).

Almost surely, 2^1289248199 is an apocalyptic number.

1289248199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289248199 is an equidigital number, since it uses as much as digits as its factorization.

1289248199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 53.

The square root of 1289248199 is about 35906.1025314639. The cubic root of 1289248199 is about 1088.3757192390.

The spelling of 1289248199 in words is "one billion, two hundred eighty-nine million, two hundred forty-eight thousand, one hundred ninety-nine".